Pole attachment for electric conductors



April 5, 1930. R. G. WILLIAMS 1,754,924

POLE ATTACHMENT FOR ELECTRIC CONDUCTORS Filed June 13, 1-928 2Sheets-Sheet 2 EEG- 11E? 0 l I] I. j

30 Ihvenfo r' 3 R6 [/CZ/it/G Ti f/hams Jf/orney lfatentedj Apr. 15, 1930UNITED STATES PATENT ca -"ice BOLLAND Q-WILLIAMS, OF BRANFQBD,CONNECTICUT, ASSIGNOR 'I'O HALLEABLE IRON FITTINGS COMPANY, OF BRANFORD,CONNECTIOUT, A GOR PORATION F CONNECT- IGUT Application filed June 13,

This invention relates to pole fixtures but more particularly hasreference to fixtures of this descri tion for carrying electrical cablesin connection with which a messenger cable 6 is utilized from which issuspended the electric cable.

In devices of this description as heretofore used it has been possiblefor a lineman to stand on the messenger cable, and as this is alwaysgrounded, serious results and freuently fatalities have followed whenthe hneman has been working on a live cable carried by the pole abovethe messenger cable. I Unless thereis some adequate protection in theway of insulation on which a lineman can stand, the law provided that alive wire must be s aced from the lower messenger cable by at east sixfeet because at this distance a lineman could not conveniently stand oneither the messenger cable, or the fixture that clamped it, and work ona live cable above.

Insulation blocks, such as pieces of wood, have been secured above themessenger cable, but these blocks have been spaced from the messengercable adistance-suflicient to permit the lineman to readily stand onsuch cable, and although this is the result of extreme carelessness,nevertheless linemen take great chances, and while they cannot work toadvantage on an upper live wire while standinglon a lower messengercable, in some way, eit er by direct contact or contact through the useof tools, serious accidents have ha pened, owing, as above stated, todownrig t carelessness. i

It is the object of the present invention to so equip the metal fixturewhich carries the messenger cable that it is an'utter impossibilit forthe lineman to stand thereon, and furt ermore to provide such a fixtureas will enable the latter or one closely resembling it, to be installedon the opposite side of the pole for the purpose of carrying anothermessenger cable from which may be supported any sort of an electriccable, whether of high tension or not.

The accompanying drawings illustrate this invention in its preferredembodiment, such as has been successfully used, and in these drawingshavin formed therein parallel horizontally course, to secure the base ofthe fixture to the Proms azr'racnmnmr non ELECTRIC conn'uc'rons 1928.Serial No. 285,192.

Figure 1 is a front elevation showing the improved fixture in positionon a pole the latter being broken away.

Figure 2 is a side elevation of the com struction shown in Figure 1 withthe pole broken away.

' Figure.3is a section at the line 3-3 of Figure 1.

Figure 4 is-a view similar to Figure 1 but showing a guard preferablymade of wood secured to the fixture.

Figure 5 is a detail rear view of the fixture shown at Figure 1.

I Figure 6 is a view similar to Figure 1 but showlng a modified form ofthe fixture.

Figure 7 is a side elevation'of the structure shown at Figure 6.

Figure Sis a section at the line 8-8 of Figure 6.

Figure 9 is a view similar to Figure 6 but 7 showing the woodenguard'mounted on the fixture. 1

Figure 10 is a detail rear view of the fixture shown at Figure 6, and v1 Figure 11 is a section which'is taken at the 7 line 11-11 of Figure 4,and also 11-11 of Figure 9, and showing particularly the installation ofthe improved fixtures on opposite sides of the pole one of the fixturesbeing that shown at Figure 1 while the other is that shown at Figure 6.

Similar numerals of reference denote like parts in the several figuresof the drawing.

The fixture comprises a base portion 1 whose rear face is curved as seenat 2 so as to approximately fit the pole 3, and from the front face ofthis base portion extends a horizontal ledge 4 which is elongated andhas raised seats 5, the outer face of this ledge 4 exten ing grooves 6,7.

This base portion 1 is perforatedat its upper and lower ends as seen at8, 9, a bolt 10 being passed through the perforation 8 and through thepole, with a nut. 11 driven on the free end of the bolt, while a lagscrew 12 is driven through'the perforation 9 in the pole, theobject ofthis bolt and lag screw being, of

pole. I

13 is a front or clamping plate which is substantially of the samelength as the ledge 4,

' plate, and when the latter is applied to the outer face of the ledge 4the grooves 6 and 14 will be opposite each other while the rib 15 willenter the groove 7.

In order to clamp the plate 13 to the ledge, bolts 16 are passed throughsuitable openings in the ends of the ledge and plate, and nuts 17 drivenon the free ends of these bolts, and a bolt 10 extends through the poleand the central portion of the ledge and plate and a nut 11 is driven onthe free end of this bolt against the face of the plate so as to assistin holding the fixture firmly to the pole, and also to aid in clampingthe plate to the ledge. 18 is a messenger cable that is clamped by theplate 13 to the ledge 41-, being embraced by the. grooves 6 and 14, andthe extension of the rib 15 within the groove 7 tends to steady andstrengthen the clamping effect.

From the messenger 18 is suspended the electric cable 19 by means of theusual metal stirrups 20.

It will he observed, on reference to Figures 2 and 4. that the seats 5are in a plane above that of the top edge of the clamping plate 13, andtherefore an elongated bar 21 of wood or other suitable insulatingmaterial placed upon these seats, so as to be supported lengthwise ofthe ledge,'will not bind against the plate 13.

This bar 21 is perforated and the bolt 10 extends through the bar and isusually provided with an ordinary washer 22, the nut 11 being thendriven against the washer. so that the bar will be firmly held in itsposition on the ledge 4.

It will be observed by reference to Figure 4, that when this bar 21 isin position, as above described, the plane of its bottom surface is soclose to the messenger cable. that it is impossible for a lineman tostand on the cable or to get any support therefrom for his feet.

Referring to Figures 6. 7, 8, 9, and 10, a slight modification of theconstruction heretofore described is shown and will now be described.

The base portion of this modified structure is denoted by the numeral 23and the rear of this base is curved to fit the pole, and from the faceof this base 23 extends a narrow ledge 24 equipped with the raised seats5 heretofore described with respect to the base 1, this base 23 beingsecured to the pole 3 by the bolts 10. and 10*, just as in the instanceof the construction shown at Figure 1, the nut 11 being driven on theend of the bolt 10, the bolt 10 extending through the pole, the ledgeand the clamping plate. hereafter described, and

being secured precisely in the manner heretofore described and as willpresently be more particularly pointed out.

A clamping plate 25 is formed at its ends with outwardly horizontallyextending ears 26 that are on the same level with the seats 5, and theouter face of the ledge 24 is formed with the grooves 6, 7, as and forthe purpose hereinbefore described with respect to the ledge 4, whilethe inner face of the plate 25 is formed with the groove 14 and rib 15heretofore noted.

The bolt 10 extends through the pole, the ledge 24, and the plates 25,and the nut 11 that is driven on the end of this bolt against the plate25 aids in securing the fixture to the pole and also in binding theclamping plate to the ledge, the bolts 16 extending through the ledgeand clamping plate with nuts 17 driven on their ends against the plateto complete the clamping operation, just as in the instance of thestructure shown at Figure 1.

There is no substantial difference between the structure shown atFigures 1 to 5 inclusive, and the structure shown at Figures 6 to 10inclusive, except that in the latter structure the clamping platefunctions to partly support the wooden bar 21 so that ordinary lagscrews 27 may be driven through perforations in the ears 26 into thebottom of the wooden bar in order to assist in holding the same inplace.

But, in installing two sets of lines on the same pole, the same boltsmay be employed passing through the pole, for the purpose of confiningthebases of the fixtures and the wooden bars in position, and forsecuring the clamping plates, and with special reference to Figure 11,this will be obvious.

But in the instance of the lower bolt 10, the latter is first clampedfirmly to the pole by means of nuts 28 driven on the ends of the bolt,and the base portions 1 and 23 are recessed as shown at 29 and 30 inorder to house these nuts so that the latter will not interfere with thebases.

In both constructions, the wooden bar 21 is so close to the messengercable 18 that it is impossible for a lineman to find any support for hisfeet on such cable, and the fixtures described therefore provide meansfor safely guarding a lineman against accident due to his owncarelessness.

Also, this fixture renders it unnecessary to cut a gain in the pole forattaching a special guard arm as is the prevailing custom at the presenttime.

"What is claimed is 2-- 1. The hereindescribed fixture for securement toa pole comprising a base having a. ledge extending horizontallytherefrom with horizontal parallel spaced grooves in the outer face ofsaid lodge, a clamping plate, and means for securing said plate to theledge and to the pole with a messenger cable firmly held between saidplate and ledge, said ledge having raised seats whose horizontal planeis in close proximity to the horizontal plane of the messenger cable andabove the upper edge of the clamping plate, and an insulatmg barsupported by said seats and secured thereto within the lower groove inthe ledge.

In testimony whereof I afiix my signature hereto.

HOLLAND G. WILLIAMS.

